Clinicostatistical Study of Orthognathic Surgery in Our Department.
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概要
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106 patients underwent orthognathic surgery in our department during the past 13 years, and every year showed a tendency to increase. The ratio between males and females was 1: 3. The age of male patients ranged from 16 years and 10 months to 35 years with a mean of 22 years, and from 11 years and four months to 38 years and 10 months with a mean of 20 years and six months for females.<BR>55 patients (51.9%) were referred from the orthodontic department of our hospital, 27 (25.5%) from orthodontic practitioners, 12 (11.3%) from general dental practitioners, and 12 (11.3%) directly visited our clinic. 71 patients (67.0%) had presurgical orthodontic treatment.<BR>51 patients (48.1%) were diagnosed as having mandibular prognathism, 34 (32.1%) mandibular prognathism with open bite, nine (8.5%) asymmetrical mandibular prognathism, four (3.8%) mandibular prognathism with both open bite and asymmetry, three (2.8%) maxillary micrognathia, two (1.9%) congenital mandibular micrognathia, one (0.9%) skeletal open bite.<BR>As concerns surgical methods, during the first five years only mandibular body ostectomy had been performed, since 1982 sagittal splitting of the rami has carried out, since 1987 Le Fort I osteotomy and simultaneous bimaxillary surgery has been performed.<BR>The average time of the operation was as follows: 3°23' for body ostectomy, 3°29' for sagittal splitting osteotomy, 4°10' for Le Fort I osteotomy, 6°36' for simultaneous bimaxillary osteotomy, 3°49' for alveolar segmental osteotomy.<BR>The average bleeding amounts during operations were as follows: 195.8 ml in body ostectomy, 304.1 ml in sagittal splitting osteotomy, 272.0 ml in Le Fort I osteotomy, 705.6 ml in simultaneous bimaxillary osteotomy, 331.0 ml in alveolar segmental osteotomy. Out of 106 patients, 24 (22.6%) had blood transfusion, 18 had autotransfusion.<BR>The average period of intermaxillary fixation was as follows: 52.4 days for body ostectomy, 48.1 days for sagittal splitting osteotomy with wire osteosynthesis, 19.1 days for sagittal splitting osteotomy with rag screw osteosynthesis, 20.7 days for Le Fort I osteotomy, 28 days for simultaneous bimaxillary osteotomy.
- 特定非営利活動法人 日本口腔科学会の論文
特定非営利活動法人 日本口腔科学会 | 論文
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